Crossword Puzzle Body Systems ReviewOnline version Match the term to the definition. by Betty Jones 1 takes in oxygen for breathing 2 transports oxygen/nutrients in your blood 3 breaks down nutrients out of food 4 body system for structure/support 5 partners with bones to help you move 6 sends messages from the brain 7 heart pumps blood 8 main organ of nervous system 9 main organ of cardiovascular system 10 main parts of skeletal system 11 main organ of digestive system 12 main organ of respiratory system 13 main part of circulatory system (flows in your veins) 13 8 12 7 2 1 10 11 6 9 5